Effects of leachate from understory medicinal plants on litter decomposition and soil enzyme activities of Betula albo-sinensis and Eucommia ulmoides

Yu-Peng, LU; Xu, Jie; Zhang, Xiaoxi; Wang, Boya; Bo, Xie; Liu, Zengwen

doi:10.17521/cjpe.2016.0350

Cited by 4 publications

(1 citation statement)

References 3 publications

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“…Despite that leaf litter contributes more to soil organic carbon than ne roots in some plantations (Cao et al 2020) and plays protective roles in runoff and erosion (Li et al 2014), this situation was not similar in medicinal plants. Lu et al showed that leachate (water-extraction solution) from the stems and leaves of common medicinal materials displayed signi cant inhibitory effects on the release of carbon, nitrogen and phosphorus from litter decomposition and the activities of all seven kinds of soil enzymes (Yu- Peng et al 2017). In consideration of the massive leaf litter of CA falling into the soil during each planting season, plus with the fact that kinds of allelopathic substances existed in leaves of many medicinal plants (Basotra et al 2005; Gupta 2016; Aniya et al 2020), we hypothesized that the falling leaf litter contributes more to the inhibitory effects on CA growth than root extraction.…”

Section: Introductionmentioning

confidence: 99%

Leaf litter contributes to the obstacles of Cynanchum auriculatum Royle ex Wight continuous cropping

Shen¹,

Wu²,

Zhang³

et al. 2023

Preprint

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Aims To test a hypothesis that fallen leaf litter results in the continuous cropping obstacle (CCO) in Cynanchum auriculatum Royle ex Wight (CA) via growth promotion and invasion reinforcement of soil-borne fungal pathogen. Methods Water extracts of leaf (LE) and root (RE) were compared for their effects on seed germination, seedling growth indices, and plant defense enzymes activities. Besides, the impacts of LE on a fungal pathogen were investigated under laboratory conditions following isolation and verification. Then, the effects of LE on soil microbial communities were determined by using high-throughput sequencing technology. Key Results A fungal strain D1 belonging to Fusarium solani causing root rot disease was isolated and confirmed for its potential contribution to CCO. Both LE and RE inhibited seed germination, seedling growth, and plant defense enzymes activities. Extracts especially LE coupled with D1 aggravated the impacts. Apart from the induction of propagation of D1 in soil, extracts could also promote hypha weight, spore number, and spore germination rate of D1 under the culture conditions. Compared with RE, LE showed more promoting-effects on the pathogenesis-related enzymes activities of D1. Moreover, caffeic acid and ferulic acid were the possible active substances contributing to the events. Besides, not bacterial but fungal community were shifted by LE especially by LE+D1. Conclusions These results suggested that water extract of leaf litter promoted the growth and propagation of strain D1, and enhanced its pathogenicity towards CA, which synthetically contributed to the CCO process.

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Section: Introductionmentioning

confidence: 99%

Leaf litter contributes to the obstacles of Cynanchum auriculatum Royle ex Wight continuous cropping

Shen¹,

Wu²,

Zhang³

et al. 2023

Preprint

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Impacts of plant secondary metabolites from conifer litter on the decomposition of Populus purdomii litter

2018

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Leaf litter from Cynanchum auriculatum Royle ex Wight leads to root rot outbreaks by Fusarium solani, hindering continuous cropping

Shen,

Wu,

Zhang

et al. 2024

FEMS Microbiology Ecology

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Cynanchum auriculatum Royle ex Wight (CA) is experiencing challenges with continuous cropping obstacle (CCO) due to soil-borne fungal pathogens. The leaf litter from CA is regularly incorporated into the soil after root harvesting, but the impact of this practice on pathogen outbreaks remains uncertain. In this study, a fungal strain D1, identified as Fusarium solani, was isolated and confirmed as a potential factor in CCO. Both leave extract (LE) and root extract (RE) were found to inhibit seed germination and the activities of plant defense-related enzymes. The combinations of extracts and D1 exacerbated these negative effects. Beyond promoting the proliferation of D1 in soil, the extracts also enhanced the hypha weight, spore number, and spore germination rate of D1. Compared to RE, LE exhibited a greater degree of promotion in the activities of pathogenesis-related enzymes in D1. Additionally, caffeic acid and ferulic acid were identified as potential active compounds. LE, particularly in combination with D1, induced a shift in the composition of fungal communities rather than bacterial communities. These findings indicate that the water extract of leaf litter stimulated the growth and proliferation of fungal strain D1, thereby augmenting its pathogenicity towards CA and ultimately contributing to the CCO process.

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Effects of leachate from understory medicinal plants on litter decomposition and soil enzyme activities of Betula albo-sinensis and Eucommia ulmoides

Cited by 4 publications

References 3 publications

Leaf litter contributes to the obstacles of Cynanchum auriculatum Royle ex Wight continuous cropping

Leaf litter contributes to the obstacles of Cynanchum auriculatum Royle ex Wight continuous cropping

Impacts of plant secondary metabolites from conifer litter on the decomposition of Populus purdomii litter

Leaf litter from Cynanchum auriculatum Royle ex Wight leads to root rot outbreaks by Fusarium solani, hindering continuous cropping

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